If the electrons within a metal substance are not bound to just a couple atoms sharing them within a substance, would those atoms be considered localized or delocalized?

Charlene puts together two isosceles triangles so that they share a base, creating a kite. the legs of the triangles are 10 inches and 17 inches, respectively. if the length of the base for both triangles is 16 inches long, what is the length of the kite’s other diagonal? 6 inches inches inches 21 inchesanswer is d on e2020edit: it's geometry not chemistry, sorry.